Light emitting display device

Abstract

Disclosed is a light emitting display device and manufacturing method thereof. The light emitting display device includes a light emitting device including a first electrode, an intermediate layer, and a second electrode at each of a plurality of emission areas on a substrate, a first capping layer and a second capping layer sequentially provided on the light emitting device and configured to have different refractive indexes, a first pattern defining layer adjacent to a side surface of the second electrode and provided at each of a plurality of transmission areas on the substrate, and a second pattern defining layer adjacent to a side surface of the second capping layer and configured to overlap the first pattern defining layer.

1 . A light emitting display device comprising:
 a light emitting device comprising a first electrode, an intermediate layer, and a second electrode at each of a plurality of emission areas on a substrate;   a first capping layer and a second capping layer sequentially provided on the light emitting device and configured to have different refractive indexes;   a first pattern defining layer adjacent to a side surface of the second electrode and provided at each of a plurality of transmission areas on the substrate; and   a second pattern defining layer adjacent to a side surface of the second capping layer and configured to at least partially overlap the first pattern defining layer.   
     
     
         2 . The light emitting display device according to  claim 1 , wherein the second pattern defining layer has a lower refractive index than the second capping layer. 
     
     
         3 . The light emitting display device according to  claim 1 , wherein a refractive index of the second pattern defining layer is equal to or higher than a refractive index of the first pattern defining layer. 
     
     
         4 . The light emitting display device according to  claim 1 , wherein the first capping layer has a lower refractive index than the second capping layer. 
     
     
         5 . The light emitting display device according to  claim 1 , wherein the first pattern defining layer has a lower refractive index than the second electrode. 
     
     
         6 . The light emitting display device according to  claim 1 , wherein an area of the second pattern defining layer is same to an area of the first pattern defining layer, and an entire part of the first pattern defining layer overlaps the second pattern defining layer. 
     
     
         7 . The light emitting display device according to  claim 1 , wherein the second pattern defining layer has a larger area than the first pattern defining layer, and an entire part of the first pattern defining layer overlaps the second pattern defining layer. 
     
     
         8 . The light emitting display device according to  claim 1 , wherein each of the first pattern defining layer and the second pattern defining layer comprises a polycyclic aromatic compound. 
     
     
         9 . The light emitting display device according to  claim 1 , wherein the first capping layer comprises an organic material, and the second capping layer comprises an inorganic material. 
     
     
         10 . The light emitting display device according to  claim 1 ,
 wherein the intermediate layer comprises a plurality of common layers and an electron injection layer in contact with the second electrode, and   wherein the electron injection layer and the second electrode are adjacent to a side surface of the first pattern defining layer.   
     
     
         11 . The light emitting display device according to  claim 10 , wherein a thickness of the first pattern defining layer is smaller than a total thickness of the electron injection layer and the second electrode. 
     
     
         12 . The light emitting display device according to  claim 1 , wherein a thickness of the second pattern defining layer is smaller than a thickness of the second capping layer. 
     
     
         13 . The light emitting display device according to  claim 1 , further comprising a bank on the substrate to expose each of the plurality of emission areas and the plurality of transmission areas. 
     
     
         14 . The light emitting display device according to  claim 1 , wherein a first vertical distance from an upper surface of the substrate to a lower surface of the first pattern defining layer is shorter than a second vertical distance from the upper surface of the substrate to a lower surface of the second electrode. 
     
     
         15 . The light emitting display device according to  claim 1 , further comprising:
 at least one transistor between the substrate and the light emitting device; and   a first insulating layer and a second insulating layer to cover the at least one transistor,   wherein at least one of the first insulating layer and the second insulating layer is not present at each of the plurality of transmission areas.   
     
     
         16 . The light emitting display device according to  claim 1 , further comprising:
 at least one transistor between the substrate and the light emitting device;   a first insulating layer and a second insulating layer to cover the at least one transistor; and   a bank on the second insulating layer,   wherein at least one of the first insulating layer, the second insulating layer, and the bank is not present at each of the plurality of transmission areas.   
     
     
         17 . A light emitting display device comprising:
 a plurality of first electrodes at each of a plurality of emission area on a substrate;   an intermediate layer on the plurality of first electrodes;   a first pattern defining layer at each of a plurality of transmission areas on the substrate;   a cathode adjacent to a side surface of the first pattern defining layer, the cathode non-overlapping the first patterning layer;   a first capping layer on the cathode;   a second pattern defining layer to overlap the first pattern defining layer; and   a second capping layer adjacent to a side surface of the first pattern defining layer, the second capping layer non-overlapping the second patterning layer.   
     
     
         18 . The light emitting display device according to  claim 17 , wherein the first capping layer and the second capping layer have different refractive indices. 
     
     
         19 . The light emitting display device according to  claim 17 , wherein a refractive index of the second pattern defining layer is equal to or higher than a refractive index of the first pattern defining layer. 
     
     
         20 . The light emitting display device according to  claim 17 , wherein the second pattern defining layer has a larger area than the first pattern defining layer, and an entire part of the first pattern defining layer overlaps the second pattern defining layer.